Vestibular evoked myogenic potentials in Bell's palsy

Krbot Skorić, Magdalena and Adamec, Ivan and Habek, Mario (2014) Vestibular evoked myogenic potentials in Bell's palsy. Neurological Sciences, 35 (10). pp. 1599-1602. ISSN 1590-1874

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The aim of the present study was to evaluate vestibular nerve involvement in patients with Bell's palsy with ocular and cervical vestibular evoked myogenic potentials (oVEMP and cVEMP). Ten patients who were diagnosed with Bell's palsy and ten healthy controls were included. All patients underwent VEMP recordings within 6 days after their initial presentation. Patients with Bell's palsy had greater oVEMP asymmetry ratio comparing to healthy controls (-38.4 ± 28.7 % vs -1.3 ± 19.3 %, p = 0.005). As well N10 latencies of the oVEMP response were prolonged comparing to healthy controls (11.575 vs 9.72 ms). There was no difference in cVEMP asymmetry ratio or latencies between groups. We found no correlation between House-Brackmann grading scale and oVEMP asymmetry ratio (r = 0.003, p = 0.994). There are three possible explanations for increased oVEMP amplitudes on the affected side: (1) oVEMP response on the ipsilateral eye could be contaminated by facial nerve activity (blink reflex); (2) the amplitude of N10-P33 could be affected through the stapedial reflex; and (3) increased oVEMP amplitude could be the consequence of the vestibular nerve dysfunction itself, with prolonged latencies of the N10 oVEMP further supporting this explanation. The results of this study indicate possible involvement of the superior branch of the vestibular nerve in patients with Bell's palsy.

Item Type: Article
MeSH: Adult ; Aged ; Aged, 80 and over ; Bell Palsy / physiopathology ; Female ; Humans ; Male ; Middle Aged ; Vestibular Evoked Myogenic Potentials
Departments: Katedra za neurologiju
Depositing User: Marijan Šember
Status: Published
Krbot Skorić, MagdalenaUNSPECIFIED
Date: October 2014
Date Deposited: 23 Sep 2015 07:59
Last Modified: 17 Jul 2020 08:30
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